磁增强雾化电晕放电烟气净化器研究  

Study on Magnetically Enhanced and Atomizing Corona Dis-charge Precipitation

作　　者：米俊锋[1] 许德玄 杜胜男[1] 孙英浩[1] 郝成祥[1] 

机构地区：[1]东北师范大学城市与环境科学学院低温等离子与污染控制工程实验室,长春130024

出　　处：《科技导报》2007年第21期38-42,共5页Science & Technology Review

摘　　要：分别进行了雾化电晕放电和磁增强电晕放电的实验研究。采用接地极雾化,通过雾化电晕放电和水的循环利用,实现长期、高效并且无污水排放的静电除尘,对雾化电晕放电静电除尘器的构造、放电特点、雾化电晕放电伏-安特性、雾化状态和电极清洗效果均进行了实验研究;通过在电晕区附近加一个局部磁场,使电晕区内的自由电子形成拉莫运动,从而提高放电电流,提高荷电区内自由电子和负离子浓度。比较了磁增强预荷电器和传统预荷电器的荷电效率,初步探究了磁增强电晕放电的放电机理。为磁增强雾化电晕放电烟气净化器的研究提供了理论基础。The characteristics of atomizing corona discharges and magnetically enhanced corona discharges are studied in this paper. The electrostatic precipitation of long life and high efficiency is achieved, with both the atomizing corona discharges and the circulating water and without any sewage. The difficulties of removing adhesive dusts of micro or sub-micro sizes in traditional electrostatic precipitation are resolved. Some experimental researches are carried out on the configuration of electrostatic precipitation with atomizing the corona discharges, the discharge characteristics, the current-voltage curves, the atomizing appearance and the cleaning of electrodes. The corona discharge current is enhanced, because of the Larmor movements of free electrons in the corona region induced by th and free electrons are also enhanced. The c e local magnetic field near the discharge electrode. The concentrations of negative ions harging efficiency of magnetically enhanced corona pre-charger is compared with that of the conventional corona pre-charger.. The discharge mechanism of magnetic enhanced corona discharge is analyzed. This paper provides a theoretical basis for magnetically enhanced atomizing corona dis-charge precipitation.

关 键 词：雾化电晕放电 磁增强电晕放电 电离碰撞 气溶胶颗粒荷电 

分 类 号：X701[环境科学与工程—环境工程]